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DESCRIPTION JP2007243538

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DESCRIPTION JP2007243538
To provide a speaker system capable of obtaining different sound quality. A speaker S is disposed
in at least both of a first space portion 1a and a second space portion 1b formed by providing a
partition wall 11 in a cabinet 1, and the first space portion 1a and the second space portion 1b.
And an opening 1d in communication with the outside, and the openings 1d are covered with the
lid 2 to form a communication path connecting the first space 1a and the second space 1b, and A
partition means 3 is provided in the middle part of the passage to open the communicating
passage and the partition and the partition to selectively form the sound path. [Selected figure]
Figure 1
スピーカーシステム
[0001]
The present invention relates to a speaker system and a method of forming a sound path.
[0002]
The speaker system is, for example, separated by a first cavity for housing the speakers, a first
cavity and a barrier, in order to increase the volume of the low frequency range. , A first duct for
communicating the first cavity provided in the first cavity with the second cavity, and an external
space provided in the second cavity And a second duct for communicating with each other, and
further, there is a speaker system in which the second cavities of each cabinet are communicated
with each other by a connection duct (see, for example, Patent Document 1).
[0003]
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JP-A-2004-320207 (page 2, FIG. 1)
[0004]
The above-mentioned conventional speaker system is considered to be suitable for lowering the
bass reproduction limit and for improving the sound pressure characteristics, however, the
conventional speaker system has piped connection ducts between the respective speaker
cabinets. In other words, it did not have a structure that can play other sound quality because it
was made to communicate and only the respective speaker cabinets were connected by a sound
path.
[0005]
Then, this invention is made in view of such a condition, and it aims at providing a speaker
system and a sound path formation method which can solve the above-mentioned problem.
[0006]
In order to achieve the above technical problems, the speaker system and the sound path
forming method according to the present invention employ the following technical means.
That is, in the speaker system according to the present invention, the partition is provided in the
cabinet to form at least the first space and the second space, and the speaker is disposed in both
the first space and the second space. A speaker system is provided, in which a communication
passage for connecting the first space portion and the second space portion is formed, and in the
middle portion of the communication passage, the partition and the partition are opened in the
communication passage It is characterized in that it is provided with partition means.
Further, in the speaker system according to the present invention, in the above-mentioned
invention, a third space is defined between the first space and the second space, and the partition
means is internally provided in the third space. It is characterized by being able to adjust the
partition condition of the said communicating path from the outer surface of the said cabinet.
Further, in the speaker system according to the present invention, in the above-mentioned
invention, the wall surface forming the first space portion and the second space portion is
provided with a pair of openings communicating with the outside, and the openings are opened
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from the outer surface of the cabinet The communication passage is formed by covering the
parts with a lid-like member so as to be able to communicate with each other.
Further, in the speaker system according to the present invention, in the above-mentioned
invention, the opening is formed on each wall surface on the back side of the speaker among the
wall surfaces forming the first space portion and the second space portion. It is characterized by
Further, in the speaker system according to the present invention, in the above-mentioned
invention, the partition means is provided on a wall surface of the third space portion, and a
holding portion engaged with a plate-like partition plate so as to be able to protrude and retract
from the cabinet. A guide groove is formed on the inner surface of the lid-like member and
guides the partition plate, and a tip portion is protruded from the outer surface of the third space
portion, and a base is engaged with the partition plate to turn the tip portion And an adjusting
member for moving the partition plate in and out of the cabinet. Further, in the method of
forming a sound path in the speaker system according to the present invention, the speaker is
provided in at least a first space portion and a second space portion formed by providing a
partition in a cabinet, and the first space portion and the above A communication passage
communicating with the second space portion is formed, and the communication passage is
characterized by opening the partition and the partition to selectively form the sound path.
[0007]
According to the present invention, the speaker is disposed in at least the first space portion and
the second space portion formed by providing the partition in the cabinet, and a series
connecting the first space portion and the second space portion. Since the channel is selectively
formed at the middle part of the communication channel by providing the partition in the middle
of the communication channel and the partition and the partition are opened, it is possible to
provide a speaker system that can provide different sound quality.
[0008]
Next, the best mode for carrying out the present invention will be specifically described with
reference to the drawings.
The speaker system according to the present embodiment exemplifies a speaker system
incorporated in a portable type music reproducing apparatus capable of reproducing music such
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as CD and MD, and as shown in FIG. 1, a cabinet 1 and a lid-like member 2 and partition means 3
are comprised.
[0009]
As shown in FIGS. 1 to 5, the cabinet 1 is formed in a substantially hollow box-like shape for
forming the external appearance of the music player, and the inside of the cabinet 1 is
partitioned by two partitions 11 The first space portion 1a and the second space portion 1b are
provided, and the third space portion 1c is provided between the first space portion 1a and the
second space portion 1b.
[0010]
A speaker S is disposed in the first space portion 1a and the second space portion 1b, and the
third space portion 1c realizes a holding portion 32 of the partitioning means 3 described later
and a music reproduction function such as CD or MD. An execution unit is provided.
[0011]
Further, in the first space portion 1a and the second space portion 1b, among the wall surfaces
forming the space portion, substantially rectangular openings 1d are formed in the respective
wall surfaces on the back side of the speaker S. There is.
[0012]
As shown in FIGS. 4 and 5, the lid-like member 2 is formed into a lid having a required length in
which the recess 2a for communicating the openings 1d with each other is formed and the
periphery of the recess 2a is formed in a bowl shape. The hooks are detachably screwed to the
back surface of the cabinet 1 to cover the openings 1d.
By covering the openings 1 d with each other by the lid-like member 2, a communication passage
A for connecting the openings 1 d is formed.
[0013]
Further, in the middle portion of the concave portion 2a of the lid-like member 2, convex
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portions are juxtaposed along the short direction orthogonal to the longitudinal direction of the
lid-like member 2, and a substantially concave guide groove 2b is formed. ing.
The guide groove 2b is a component of the partitioning means 3 described later.
[0014]
The partition means 3 includes the above-described guide groove 2b, a partition plate 31, a
holding portion 32, a noise prevention member 33, and an adjustment member 34.
[0015]
As shown in FIGS. 4 and 5, the partition plate 31 is formed in a substantially rectangular shape
whose upper portion is cut out in a concave shape, and a rack 31a is engraved on one side
surface of the upper portion which is overhanged by a required length.
Further, the lower portion below the rack 31a is formed longer than the upper portion, and the
lower portion is formed with a required height and width so as to be slidably engaged with the
guide groove 2b. .
[0016]
The holding portion 32 is formed so as to protrude in a substantially concave shape with the
same width as the guide groove 2b from the inner wall surface of the cabinet 1 in which the third
space portion 1c is formed so as to face the guide groove 2b. As shown in FIG. 2, the upper part
of one side wall 32a is extended toward the upper part of the other opposing side wall 32b by a
required length so as to cover the upper surface of the inserted partition plate 31.
[0017]
Further, the tip end portion of the holding portion 32 is opened, and the partition plate 31
described above is inserted from the opening so as to expose the rack 31a portion and held
slidably.
[0018]
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Further, as shown in FIGS. 4 and 5, a substantially rectangular recess 1e is formed on the outer
wall surface of the cabinet 1 facing the inner wall surface of the cabinet 1 in which the holding
portion 32 is formed. At a position corresponding to the portion 31a, a boss 1g provided with a
communication hole 1f is extended downward.
Further, the periphery of the communication hole 1 f opened in the upper wall surface of the
cabinet 1 is recessed.
[0019]
The noise prevention member 33 prevents the sound from being mixed directly into the third
space portion 1c, and as shown in FIG. 5, it has a substantially rectangular shape in which a slit
33a to be in sliding contact with the partition plate 31 is formed. , And fitted in the abovementioned recess 1e.
[0020]
The adjusting member 34 is formed with a shaft 34b having a pinion gear 34a engraved on the
tip end thereof and engaged with the rack 31a, and a cylindrical portion 34d having a jaw 34c
formed at the tip, and is larger than the cylindrical portion 34d And a substantially cylindrical
knob 34 e having a diameter.
The adjustment member 34 is fitted in the cylindrical portion 34d so that the pinion gear 34a
protrudes, and is loosely inserted in the communication hole 1f so that the jaw 34c is engaged
with the lower end portion of the boss 1g. The pinion gear 34a and the rack 31a are engaged
with each other.
[0021]
A pointer 34g is formed on the upper surface of the knob 34e of the adjusting member 34, and a
scale (not shown) corresponding to the pointer 34g is formed around the communication hole 1f
recessed in the upper wall surface of the cabinet 1 .
[0022]
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In the speaker system according to the present embodiment configured as described above, the
pinion gear 34a is rotated by rotating the knob 34e of the adjustment member 34, and the rack
31a is engaged with the pinion gear 34a. The partition plate 31 held by the holding portion 32
moves back and forth.
In addition, the movement amount of the front and rear of the partition plate 31 can be viewed
visually from the outside quantitatively using a pointer 34g and a scale.
[0023]
Along with this, the partition plate 31 moves back and forth along the guide groove 2b formed in
the middle portion in the concave portion 2a of the lid member 2 and opens the partition and
partition in the communication passage A in the middle portion of the communication passage A.
6 and 7 show a state in which the communication passage A is partitioned.
[0024]
As described above, the speaker system according to the present embodiment is configured such
that the communication passage A connecting the first space portion 1a and the second space
portion 1b is a partition and the partition is opened, but as an enclosure (speaker box) As a basic
form of the closed enclosure is formed.
However, by dividing or sharing the space portion of the left and right speakers S, sound quality
adjustment can be performed using the phase relationship between the left and right speakers S
in addition to the change in the internal volume.
[0025]
That is, when the communication passage A is partitioned, closed enclosures characterized by
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straightforward sound quality are respectively formed, and when the communication passage A
is opened, the bass reproduction limit can be lowered. Of course, the sound quality changes
depending on the partition condition (aperture condition) of the communication passage A, and
the sound quality adjustment can be performed without electrically adjusting the audio signal.
[0026]
In addition, by removing the lid-like member 2, the opening 1d provided on the back surface of
the speaker S is exposed, and the first space portion 1a and the second space portion 1b form an
enclosure similar to the bass reflex type. be able to. However, if a low-pass resonant port (duct) is
provided in the opening 1d, a bass reflex type enclosure can be formed.
[0027]
The specific embodiment has been described above, but the present invention is not limited to
the above embodiment, and it goes without saying that the present invention can be
implemented with appropriate modifications without departing from the scope of the invention.
[0028]
Further, although the present embodiment exemplifies a portable type music playback apparatus
capable of playing music such as CD and MD, the present invention is not limited to sounds such
as other audio devices, televisions, speaker systems alone, etc. It is applicable as long as it
reproduces.
[0029]
Further, according to the present invention, the speaker S is disposed in at least both of the first
space portion 1a and the second space portion 1b formed by providing the partition wall 11 in
the cabinet 1, and the first space portion 1a and the second space portion 1b. It is not
particularly limited as long as it is a method of forming the communication passage A
communicating with the communication passage A and opening the partition and the partition to
selectively form the sound path.
[0030]
It is a back side perspective view of a speaker system concerning this embodiment.
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It is a vertical rear view.
FIG.
It is a vertical enlarged left side view. It is a disassembled perspective view of the partially
permeated state. It is a cross expanded plan view in the principal part of the state which divided.
It is the vertical expansion left side view of the state which partitioned.
Explanation of sign
[0031]
DESCRIPTION OF SYMBOLS 1 Cabinet 11 Partition 1a 1st space 1b 2nd space 1c 3rd space 1d
Opening 1e Recess 1f Communication hole 1g Boss 2 Cover-like member 2a Recess 2b One side
wall 32b the other side wall 33 leakage prevention member 33a slit 34 adjustment member 34a
pinion gear 34b shaft body 34c jaw 34d tube portion 34e knob portion 34g pointer A
communication passage S speaker
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